If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What does a man do only once in his lifetime, but women do once a year after they are 29?

A sundial has the fewest moving parts of any timepiece. Which has the most?

A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

I have no life, but I can die. What am I?

Keyboard words are not in alphabetical order, Why?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?

10+10 and 11+11 can give you the same answer.

Explain how?